Great literature in book form cannot be improved, can be reused for decades, and doesn’t contaminate with lithium or with any of the other computer-based metals whose effect on the water table we have yet to put to reckoning. Plus, and here a real-life gee-whiz account about a text I had edited, a good manual book, under proper circumstances, will stop a round from an AK-47. Sony Readers can make no such claim. >>Books? Who bothers with those anymore?